Nonagon.
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A nonagon.
A Nonagon
A 9-gon is a polygon with nine sides and nine angles
A 69-agon any polygon with more than 10 sides has however many sides + agon i think...
A polygon with 9 sides is called a nonagon. A nonagon is a closed shape with nine straight sides and nine angles. It is also known as an enneagon. Each interior angle of a regular nonagon measures 140 degrees.